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This device is an at-home beverage machine made by SodaStream. The purpose of this device is to make carbonated beverages in the convenience of your own home with the use of syrups and the machine. This particular model was originally manufactured in approximately 2007.

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Soda Stream - nut on air line split in half

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The plastic fitting that is on the 1.7mm line has split in half.

Soda stream do not sell spares

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I had this exact problem, I fixed it with by 3d printing this object:

https://www.thingiverse.com/thing:478384...

There are other fixes on thingiverse, but this is what worked for me.

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Sodastream does not sell replacement parts. (That's a good reason to consider buying from another company instead). The older Sodastream models used plastic fittings, and it's very common for them to split. You can print your own replacement, or buy one online. But 3D printing does not produce parts that are strong enough to hold up under pressure, so it may only last a short while. It's probably better to pay a little more for a replacement made of brass or aluminum.

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I saw several of the 3D printed solutions and I didn't feel any of those captured what I wanted. So I've created a design that I think solves several of the issues:

  1. New nut must be able to reuse the old hose (so no need to find new hose, or the crimps).
  2. Home made with 3D printer, so that if it fails, can re-make.
  3. The load on the crimp must be uniform around it's perimeter (there are some solutions which only press on half to 3/4 of the crimp, allowing gas to leak from the non-pressed portion).

So I came up with a half nut design with an outer case to hold the half nuts together. I've put the design on Thingiverse if anyone needs it. Make it out of PETG for better strength. Tested it and so far seems to work ok!!

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